短语to fly the nest的意思是一个人离开父母开始自己独立的生活。
- When David started university he had to fly the nest and live alone.
- All the children have flown the nest so Mum now has a lot of spare time.
值得注意的是，a nest egg的意思是存款、储备金。
- Jane is going to use her nest egg to buy a big house by the sea.